(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

given a certain state |ψ> that is an eigenstate ofL^2and Lz

Calculate <Lx^2> and <Lx>

2. Relevant equations

L^2|ψ> = l(l+1)h^2

Lz|ψ> = mh|ψ>

Lx = YPz - ZPy

3. The attempt at a solution

<Lx^2> = (1/2)(h^2)[l(l+1)-(m1)^2]

for Lx i got

<Lx> = ∫ψ(YPz-ZPy)ψ dx

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Expectation Value of a component of Orbital Angular Momentum

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